Goodwill and Other Intangible Assets - Finite-Lived Intangible Assets (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Goodwill and Other Intangible Assets
Weighted average remaining expected life of finite lived intangible assets	18 years
Gross carrying amount	$ 1,346.3	$ 810.2
Accumulated amortization	343.2	288.4
Net carrying amount	1,003.1	521.8
Amortization expense for intangible assets with finite useful lives	62.8	$ 53.9	$ 45.4
Estimated amortization expense for the next five years
Year 1: Finite lived intangible assets amortization	74.5
Year 2: Finite lived intangible assets amortization	73.2
Year 3: Finite lived intangible assets amortization	72.4
Year 4: Finite lived intangible assets amortization	70.2
Year 5: Finite lived intangible assets amortization	$ 69.0